Auto merge of #52802 - kennytm:rollup, r=kennytm

Rollup of 11 pull requests

Successful merges:

 - #52702 (Suggest fix when encountering different mutability from impl to trait)
 - #52703 (Improve a few vectors - calculate capacity or build from iterators)
 - #52740 (Suggest underscore when using dashes in crate namet push fork)
 - #52759 (Impl Send & Sync for JoinHandle)
 - #52760 (rustc_metadata: test loading atoi instead of cos)
 - #52763 (Omit the vendor component in Fuchsia triple)
 - #52765 (Remove unused "-Zenable_nonzeroing_move_hints" flag)
 - #52769 (Incorporate a stray test)
 - #52777 (Fix doc comment for 'ptr::copy_to' method)
 - #52779 (revert accidental atty downgrade)
 - #52781 (Use a slice where a vector is not necessary)

Failed merges:

r? @ghost